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professional-javascript-11-NumericScrollExample.htm / htm

          <title>Numeric Scroll Example</title>
          <script type="text/javascript" src="detect.js"></script>
          <script type="text/javascript" src="eventutil.js"></script>
          <script type="text/javascript" src="textutil.js"></script>
          <p>Type a number into the textbox, then press the up or down arrow.</p>
          <form method="post" action="javascript:alert('Submitted')">
              <input type="text" onkeypress="return TextUtil.allowChars(this, event)" 
                  validchars="0123456789" onblur="TextUtil.blurAllow(this)" 
                  onkeydown="TextUtil.numericScroll(this, event)" />
              <input type="submit" value="Submit Form" />

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